1. Missed the live Ask the Expert event?
    Catch up on the conversation with Ken Hutcheson, President of U.S. Lawns in the Franchising forum plus sign up to receive a FREE eBook on how to grow your landscape business.

    Dismiss Notice

87 gas vs 93

Discussion in 'General Industry Discussions' started by tb8100, Feb 28, 2008.

  1. tb8100

    tb8100 LawnSite Bronze Member
    from TX
    Messages: 1,625

    Does octane really affect fuel economy? I know alot of experienced guys running 93 and alot of experienced guys that won't. The more the octane the more complete the combustion? Someone educate me, please! :dancing:
  2. Frue

    Frue LawnSite Bronze Member
    Messages: 1,472

    10 years in the bus I only use 87
  3. RGM

    RGM LawnSite Senior Member
    Male, from Baltimore Md
    Messages: 979

    I use 87 in my mowers and 93 in the 2 strokes
  4. KarambaStar

    KarambaStar LawnSite Member
    Messages: 76

    More important is watching the alcohol content.
  5. Frontstreetlawns

    Frontstreetlawns LawnSite Member
    Messages: 168

    93 adds life to your equip. well known fact. you get your money back on less maint.
  6. All_Toro_4ME

    All_Toro_4ME LawnSite Bronze Member
    Messages: 1,578

    I use 87 in 4 cycle stuff and 93 in 2 cycle stuff. Higher octane requires less internal temp for combusiton of fuel.
  7. TSG

    TSG LawnSite Senior Member
    Messages: 444

    Run the lowest octane possible.
    Just high enough to avoid "Ping".
    Any higher is a waste.
    High octane in low compression engine = waste of money and can lower
    Higher octane has a higher combustion temp.

    just .02
  8. JimQ

    JimQ LawnSite Bronze Member
    Messages: 1,139

    Holy Cow. This is going to be a good one! :laugh:

  9. DBL

    DBL LawnSite Silver Member
    Messages: 2,219

    thats how we run it
  10. cgaengineer

    cgaengineer LawnSite Fanatic
    Messages: 15,777

    This is true...it actually takes more heat to combust 93. The reason for a higher octane fuel is for higher compression engines, turbocharged engines or supercharged engines. It is a waste to run anything more then you need too, and it does not result in a cleaner engine or more power, it actually makes less power. Octane is a combustion inhibitor not an excellerant.

    Here is something I pulled up to back my claim:

    And for those of you interested in octane boosters. I have owned both a turbocharged car and a supercharged truck and both would detonate running on 87 with an octane booster, the detonation would go away when run on 93.

Share This Page